Adult echinoderms have five-point radial symmetry and include sea stars, sea urchins, and sea cucumbers. They are the largest phylum that has no freshwater or terrestrial (land-based) representatives.
Sea stars
Cushion star, Culcita novaeguineae
Granulated sea star, Choriaster granulatus
Galathea sea star, Nardoa galatheae
Linckia sea star, Linckia multifora
Indian sea star, Fromia indica
Noduled sea star, Fromia nodosa
Red-spined brittle star, Ophiothrix purpurea
Sea cucumbers
Pinkish sea cucumber, Holothuria edulis
Black-spotted sea cucumber, Pearsonothuria graeffei
CrinoidsBlack & white feather star, Cenometra bella
Sea UrchinsGrinding sea urchin, Echinostrephus molaris
Blue-black sea urchin, Echinothrix diadema
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Last modified 1 November 2024